Marengo County, Alabama: Power, Data Centers and the Local Economy
Home to Demopolis and Linden
Marengo County is not a build-out site today. It feels the boom through the grid it shares, the utilities that serve it and the work nearby. Marengo County is home to Demopolis and Linden. Construction employs 536, up 31.7% since 2019, and construction is 1.4 times as concentrated here as in the U.S. economy. Next door, Clarke County has 1 data center. Unemployment was 4.5% in August 2026, against 3.8% in 2019. Its power plants have 47 MW of capacity, 100% of it other technologies.
Cities and towns in Marengo County
Marengo County is home to Demopolis and Linden.
Unincorporated communities (governed by the county): Nanafalia, Putnam.
Residents are 2025 Census estimates for the part of each city, town or township inside this county. Census publishes no annual estimate for unincorporated communities.
What changed in Marengo County
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in Alabama |
|---|---|---|---|---|
| Population (2020 → 2025) | 19,266 | 18,311 | ▼ 5.0% | 48th of 67 by size |
| Total jobs (2019 → 2025) | 7,180 | 7,243 | ▲ 0.9% | 38th of 67 by growth |
| Average annual pay (2019 → 2025) | $41,765 | $55,753 | ▲ 33.5% | — |
| Construction jobs (2019 → 2025) | 407 | 536 | ▲ 31.7% | 14th of 41 by growth |
| Unemployment rate (2019 → August 2026) | 3.8% | 4.5% | ▲ 0.7pts | — |
| Generating capacity added since 2019 | — | 0 MW | — | |
| Generating capacity retired since 2019 | — | 0 MW | — |
Alabama Power Co is the largest utility serving Marengo County, one of 2 with territory here. Its residential customers paid an average 16.77¢/kWh in 2024, above the 13.24¢ median for Alabama utilities. Employers here counted 7,243 jobs in 2025, up 0.9% from 2019. 18,311 people live here, down 5.0% since 2020.
Who powers Marengo County
Utilities with service territory in Marengo County
| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| Alabama Power Co | Investor Owned | Bundled | 1,332,911 | 16.77¢ | 26% |
| Black Warrior Elec Member Corp | Cooperative | Bundled | 20,053 | 13.24¢ | 27% |
Customer counts, prices and sales shares cover each utility's whole system in the state, not only this county. Commercial sales include data centers.
Operating power plants 1
| Technology | Capacity | Share |
|---|---|---|
| Other technologies | 47 MW | 100% |
| Largest plants | Owner | Technology | MW | Since |
|---|---|---|---|---|
| WestRock Demopolis Mill | WestRock Mill Company, LLC | Other technologies | 47 MW | 1982 |
The Marengo County labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 7,243 | $55,753 | 1.00 |
| Construction | 536 | $69,961 | 1.40 |
Concentration is the BLS location quotient: 1.0 means the industry holds the same share of local jobs as it does nationally. Industry rows count private employers; cells BLS suppresses are left out.
Data centers and local rules in Marengo County
No data center, local measure or delayed project is on record in Marengo County. Alabama has 18 local measures on record statewide.
Marengo County and its neighbors
Of the 8 counties that border Marengo County, Greene County carries the most build-out activity: data centers, planned generation and operating plants combined.
| County | Population | Jobs since 2019 | Operating MW | Planned MW | Data centers | Local measures |
|---|---|---|---|---|---|---|
| Marengo County | 18,311 | ▲ 0.9% | 47 MW | — | — | — |
| Choctaw County | 11,904 | ▼ 7.9% | 88 MW | — | — | — |
| Clarke County | 22,014 | ▼ 3.3% | 204 MW | — | 1 | — |
| Dallas County | 35,140 | ▼ 5.9% | 104 MW | 95 MW | — | — |
| Greene County | 7,067 | ▼ 1.5% | 1,288 MW | — | — | — |
| Hale County | 15,194 | ▼ 0.4% | — | — | — | — |
| Perry County | 7,425 | ▼ 14.8% | — | — | — | — |
| Sumter County | 11,588 | ▼ 2.4% | — | — | — | — |
| Wilcox County | 9,666 | ▼ 3.5% | 178 MW | — | — | — |
More of Alabama
Marengo County, answered from the record
Who provides electricity in Marengo County, Alabama?
2 utilities have service territory in Marengo County in the EIA-861 2024 report: Alabama Power Co, Black Warrior Elec Member Corp. The largest, Alabama Power Co, charged residential customers 16.77¢/kWh on average in 2024.
What power plants are in Marengo County?
1 operating plant with 47 MW of capacity. The largest is WestRock Demopolis Mill (47 MW, other technologies).
Are there data centers in Marengo County?
The SAVRN Data Center Map has no data center in Marengo County. The nearest activity on record is next door in Clarke County.
Is Marengo County adding jobs?
Employers counted 7,243 jobs in 2025 against 7,180 in 2019 (+0.9%, BLS QCEW). Construction went from 407 to 536.
Does Marengo County have a data center moratorium?
No county-level measure is on record for Marengo County. Alabama has 18 local measures statewide, listed on the state page.